. >> inside we met spy museum director peter ernest. >> it's good to meet you. >> once a spy himself during his 38-year career with the cia, peter offered us a tour and a firsthand view of what it's like to be under cover. >> and when people talk about i have a cover, that's when i pretend to be somebody else. >> sierra was fascinated especially when given her own cover, a new identity as a spy. >> here's what i want you to try and remember, okay? >> yes. >> what's your fame? >> jane myers. >> and you're what? >> a female. >> okay. all right. and how old are you? >> 13. >> how old are you really. >> 12. >> in real life, she era has had to make changes. five years ago at 7 years old, she became a foster child. >> she came to the system due to instability in her people. >> she says sierra is a bright youngster who adapts well to new situations >> he era's very friendly and outgoing. she's very inquisitive. she really 30ss for knowledge. >> sierra says spying looks really interesting but she really want to be a lawyer some day. >> i want to be a lawyer and because lawyers like to debate